Grinding-machine.



G. Ni. POINT @L C. H. DOEBLER.

GRINDING MACHINE.

APPLICATION FILED 055.3. 1912.

5,149,288 atented Aug. 10, 1915.

G. IVI.v POINT L C. II. IIOEBLER` GRINDING MACHINE.

APPLICATION FILED DECS, 1912. ,y Patented Aug'. l0, 191D.

2 SHEETS-SHEET?.

n di M. POINT ANB GEI-'iii EES BOEBLER, DF HUNTNGTON, WEST VIRGINIA.

GRNBIN G-MACHINE.

Be it. known that onen M. POINT and Ciuiiiics H. Toi: citizens of the United rtatesresiffi ectiyely, at 833) Ninth street 1 f' I ton, in ll liest I:nsti-eet, Hunting- "inding ina- =il efe-"ts thereill grind, lasses used This inrentio shine ainl ou of is to prov at the saine time, in water gages. I l

iinother oojert to provide a grinding machine which is etiirient operation and comparatively inexpensive to niainiinetiirc.

A further object is to provide a grinding `machine whereby lateral and reripiocatory motion imparted to the object. to be ground, means of eefzri'itrics ol; diluir-ent degrees oi throw provideiil upon an identical shaft.

rhese and ot' by means ot.' the con ion, combination ainl arra ement ot' pa hereinzilter more fully desoibed, pointed out in the claims and' illustrated in the aeeoiniianying draw ings in ".vhieh:

lligure 1 a top plan view ot our invention.V Fig. 2 is a Sectional view thereof taken on the line .f/z-ffe of 1 and looking in the direction of the arrows. Fig. 3, is a sectional .'iewtalien on the line of i"ig. l, l

Referring more particulari to the drawings the preferred embodiment oi our invention provides a rectangular table l, supported in any desired manner.' Provided centrally thereof is a perforation through which a shaft 1 extends, portion ot Yfor aiw'aj bofe the table bel with is l) be attained a' I, provided at end with an :.nnidar Vl'ange el sts upon the l l. r"he porhi shati; f e coilar is re- ,s upper end serew i and irovided on the snow threadon h dish said disk being provided near the outer eo thereof with a vertical pin il. rerured to the reduced portion .inf the sh imiiiedi y above the eoliar I3 and rest i thereon is a grinding disk, Compris a oottoin provided at its an answerer-f extend Specification of Letters Patent.

annular flange F, and further provided Centrally of the bottom 7 with an upwardly eiteiufing enlarged portion 9, through which the reduced portion otl the shaft 2 extends. rfhe enlarged portion 9 forms, with the flange 8, :in annular groove of considerable width and seated in this groove is an rannular grinding plate 10, made of any desirable and suitable substance.

Detachably secured to each corner of the table 1 by means of a strap 11 and bolts 12 is an angleiron 13, provided with a vertical portion 14, and an inwardly bent horizontal portion 15, said horizontal portion extending over the grinding disk and having its inner end enlarged as at 16 and bitui-rated. Pivoted between the prongs of the bifurcated end portion by means of lugs 1T borne in pertorations in said prongs is a collar 18, slidably maintaining in position a cylindrical spring easing 1f), said Casing having its upper end closed and provided centrally of the closed portion with a perforation, through which extends a pivot pin 20, having its lower end beveled to a point 21. Near its lower end, the pin is provided with an enlarged portion 22 which its the inside ot' the spring casing and is adapted to slide therein. A coiled spring 23 surrounds the pin above the enlargement 22 and bears at one end against said enlargement and at the opposite end against the closure at the top ot' the spring casino. Secured in any desired manner in the top of the spring casing, such as by being seated in a slot therein. isan upright resilient member 24 semi circular in cross section, said member being quite close to the pin 2O but not touching it, and being provided near its upper end with a pair of oppositely disposed notches adapted to engage a cross pin 2f seated in a` perforation of the pivot pin 2() a little above the spring casing li). lt will be understood that normally the pin 2() is presseddownwardly by action of the spring 22-3, but at 'times it is desirous to maintain this pin in a. raised position as will be explained hereinafter, and it is at such times that the rross pin is engaged by the notches. A set screw 2G seated in a screw threaded perforation in the front of the collar 18, is adapted to hold the spring casing 19 in position.

The preferred embodiment ot' the invention rprof'ides a glass holder comprising a narrow plate 2T, rounded at each end and provided with a number of downwardly cX- tendingpins .25 arranged to bear against the surface ot' the plate peripheifv nl" a gaffe glass-29, The upper.

i 1i ihvided centrally thereof with-2in recess '30 ot a greater dil rn aineteiftlia-n the diameter ot the pivotipin 2l), and is drilled ont to contorni with the point 2l. .\t one end oi the glass holder is provided an upwardly extending pin 3l,

keyed or secured in any desired inanner upon the reduced portion ot the shaft 2, abovel thc grinding disk and directly above one another. are tour. eecentrics F32, each working in an eccentric strap 323, lntegral. with. each strap is an eccentric rod 3l, provided at its onter end with a perforation for the passage therethrough ot a pin 20.

Four rods IS provided at each end with n perforation are secured at one end on the Avertical pin (i, by being slipped onto the pin, and each oi theI i'ree ends ot' the rods is slipped oirone ot' the pins 3l on the glass'A `,ciprocatoigv movement through the eccentric v and eccentric rod :it which oscillates the pivot pin 2O thns moving the glass back and forth. at the saine time that oscillatory inotion is imparted to the glass by reason ofthe Vmovement ot' the. rod 35 extending from the pin (i to the` pin 3l on the glass holder. lll'hcn it is'desirednto remove or replace `the glass, the pin 20 is raised until the cross pin 25 engages the notches in the member 9A, whereby the point 2l ot the pivot pin is brought out otA engagement with the recess El() in' the glass holder.

,The rod 35 may then be taken oliI the pin 3l. and the glass holder be easily reinm'ed.,

lAlthough we have described ,the specificconstriiction, combination and arrangement got parts comprising the preferred embodithrough ment ot our device, yetit, is to be understood that` such minor changes may be made therein as do not depart from the spirit ot the invention yand the scope ot' the appended claims. l

l'laving thus described our iiirention,\vhat A we claim as new and desire to secure by liettei's' latent, is:

*1. ln a grinding machine, of the lkind described; a table, a shaft extending thcrea grinding disk on said shaft, a grin'diiiig plate on said disk, angle irons having a portion extending overthe grinding plate. spring actuated pins supported bv sind irons, holders engaged by said pins,

said holders adapted to maintain the object' tij-be ground, means. lor reciprocating the holders and means for oscillating the saine, as, and't'or the purpose, described.

2. ln a grinding machine. a table, a shaft extending therethrouglnra grinding disk on said shaft. spring actuatedlpivot pins sup# yported above said disk, holders lengaged byI said pins, eccentrics onsaid sliat't,l means connected to saideccentrics and said pivot pins for reciprocating said holders, and meansfor oscillating the saine, as, and foi' the purpose, described.

23. 'ln a grinding machine, a table, a

grinding disk supported thcreabove, a

grinding plate on said disk, spring actuated i pivot pins supported. above said disk, hold- .erssupportcd by said grinding plate, said holder engaged by said pivot pins, means for holding said pins out of engagement with said holder, vmeansfor reciprocating said holders, means for oscillating the same,

and means for revolving said disk and plate,

as, and tor the purpose, described.

4. ln a grinding machine, a table, a shaft extending therethrough, a grinding disk se- A cured on said shaft, agrinding plate onsaid disk, 'a smaller disk on the shaft, a pin in said smaller disk,- spring' casings supported above said grinding disk, pi'yot pins in Said fasings, springs in said casings to normally hold said pins downwardly, holders supported abovel said grinding plate, and pivotally engaged by said pivot pins, means Afor -holding said'pins'out ot' engagement with l 4said holders, pins supported in said holders,

rod-s extending from the lastl mentioned pins tothe, pins on the smaller disk foi-oscillatingjs'aid holders, eccentrics on said shaft,

rods xtending from said eccentrics'to the' i' pivot-pins for reciprocating the holders', and means for revolving the said shaft, as, and

l for the purposes described. I

5. Ina,grinding machine, the combination ofa reroluble disk, a grinding plate thereon, withr pivotally held holders, means for reciprocating the holders, and means for oscillating the saine. I l

G. A machine of the typedescribed, in# cluding a carrying member, means foractuating said carrying member, a holder superposed with respect to said carrying member,

means for reciprocating said holder, andmeans for imparting an oscillatorymovement to said holder, said freciprocatory and oscillatory, movement transmitting means being actua-ted from said carryingfmember actuating means. 1 v7. A machine ot' the type described, including a carrying member, means for actuating said carrying member, a holderA superposed Wih espeot 'to said cm'yng mem-I bei', means for reclprocatmg Sad holder,

,and means for deveriug resilient pressure to said hoder.

S. A machine of the type described, nchldng a em'fjvng member, means for aci-ua'ng said onfrying-member, a hoder slijpen posed with respect to seid Cfu'yng member, means foy recproonnglj seid holder 0 means for dex'ew-iawm reslen pressure Lo Said holder, and mea-ns for imparting an osellatory movement to said holder.

n estmony whereof We ax our signaures in presence of two Witnesses.

GEGRGE M. PQINT. CHARLES H. DOEBLER.

tnesses J. E. FRESTON, D. A. BIAS. 

